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Journal by N3Roaster
It's probably a little basic for many of the readers here, but today I put out a new video aimed at coffee roasters explaining how the measurement systems they rely on work under the hood. General knowledge stuff (what's a bit, how does analog to digital conversion work) but most coffee roasters have never looked at their systems from this perspective and a little bit of background knowledge makes it easy to troubleshoot data acquisition problems that can often be solved with a simple change to a hardware or software setting.
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
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Never use "etc." -- it makes people think there is more where there is not
or that there is not space to list it all, etc.
(Score: 1) by Ethanol-fueled on Friday February 23 2018, @02:34AM
What was your stock photo IC, a ceramic package with beryllium in it?
Actually did a similar project for a client not too long ago. I can't supply the code or other details because reasons, but I can assure you it has nothing to do with coffee as well as offer anybody with an interest in cheap temperature measurement a couple tips. Get yourself one or more of these, [adafruit.com] an Arduino (or whatever else). Adafruit provides nice .cpp and .h files for you to use. There's no cumbersome calibration, everything is nice and linearized, and as a bonus K-type thermocouples operate over a fuckhuge temperature range. These ones can be used with either the SPI bus or Arduino's SoftSerial implementation of it.
Sure beats the "typical" industrial calibration, shit like cubic interpolation from solving 120 X 120 Gaussian elimination.